Optimization of waveform operation in electronic musical instrum

Details Optimization of waveform operation in electronic musical instrum Optimization of waveform operation in electronic musical instrum

1989-02-15

1990-09-11

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84617, 84655, 341 26, 341 27, G10H 118, G10H 704

Patent

active

049552783

ABSTRACT:
An electronic musical instrument having a number of keys, having tone generators capable of simultaneous tone production, the tone generators being smaller in number than the number of keys. The instrument forms an operation for synthesizing a desired waveform, the operation for synthesizing a desired waveform being performed in a repeating cyclic order with an operation cycle and in which the waveform is transferred to the tone generators and read out therefrom at a rate in accordance with the note of a key being depressed to obtain a desired musical waveform. The device includes a number-of-depressed keys detecting device which counts the number of keys which are actuating the tone generator upon depression. A cycle altering device is provided for changing the operation cycle, as a whole, on the basis of the number of depressed keys, counted by the number-of-depressed keys detecting device. The construction allows for a waveform of a smooth temporal variation to be produced.

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patent: 4653375 (1987-03-01), Honda et al.
patent: 4805509 (1989-02-01), Matsuda

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